//  ViewController.m
//  02_UIViewController
//
//  Created by li cheng on 16/7/15.
//  Copyright © 2016年 li cheng. All rights reserved.
//

#import "ViewController.h"
#import "PresentViewController.h"

@interface ViewController ()
@property (nonatomic, strong) UIView *subView;
@end

@implementation ViewController

// ViewController的生命周期
// 初始化方法
- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // 不要在这个方法中,去加载视图
        // 在这个方法中去初始化一些数据相关的内容
    }
    return self;
}


// loadView 加载UIViewController中的View
// UINavigationController
// UITableViewController 在 loadView中 给重写赋值了
// 加载view
- (void)loadView{
    [super loadView];
    NSLog(@"loadView");
}


// view 已经加载
// 所有自定义视图的创建
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    NSLog(@"viewDidLoad");
//    self.view = nil;
//    NSLog(@"%@", self.view);
    
    
    // 模态
    
    
    
    
}


- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    PresentViewController *present = [[PresentViewController alloc] init];
    // 模态, 动画效果
//    UIModalTransitionStyleCoverVertical 默认效果. 从小往上
//    UIModalTransitionStyleFlipHorizontal 左右旋转翻页
//    UIModalTransitionStyleCrossDissolve 渐变效果
//    UIModalTransitionStylePartialCurl 翻书效果
    present.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    // 模态. 一个视图控制器
    [self presentViewController:present animated:YES completion:^{
        
    }];
}

// 注意: init loadView viewDidload 只执行一次

//试图将要出现时
- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
}

//视图已经出现时
- (void)viewWillDisappear:(BOOL)animated{
    
    [super viewWillDisappear:animated];
}

//视图已经消失时
- (void)viewDidDisappear:(BOOL)animated{
    [super viewDidDisappear:animated];
}



// 懒加载
- (UIView *)subView{
    if (_subView == nil) {
        _subView = [UIView new];
        [self loadView];
    }
    return _subView;
}

// 接受到内存警告时,执行的方法
- (void)didReceiveMemoryWarning {
    // 从父类继承来的方法中有内存警告的打印
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
    // 释放部分内存资源
    // 把未显示在屏幕上的资源置空
}

@end


